CN111484252A - Method for resource utilization of hazardous waste incineration residue by melting, chloridizing and roasting - Google Patents
Method for resource utilization of hazardous waste incineration residue by melting, chloridizing and roasting Download PDFInfo
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- CN111484252A CN111484252A CN202010338545.9A CN202010338545A CN111484252A CN 111484252 A CN111484252 A CN 111484252A CN 202010338545 A CN202010338545 A CN 202010338545A CN 111484252 A CN111484252 A CN 111484252A
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C1/00—Ingredients generally applicable to manufacture of glasses, glazes, or vitreous enamels
- C03C1/002—Use of waste materials, e.g. slags
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B7/00—Hydraulic cements
- C04B7/24—Cements from oil shales, residues or waste other than slag
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/005—Preliminary treatment of scrap
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B11/00—Obtaining noble metals
- C22B11/02—Obtaining noble metals by dry processes
- C22B11/021—Recovery of noble metals from waste materials
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B13/00—Obtaining lead
- C22B13/02—Obtaining lead by dry processes
- C22B13/025—Recovery from waste materials
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B15/00—Obtaining copper
- C22B15/0026—Pyrometallurgy
- C22B15/0028—Smelting or converting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/20—Obtaining zinc otherwise than by distilling
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B19/00—Obtaining zinc or zinc oxide
- C22B19/30—Obtaining zinc or zinc oxide from metallic residues or scraps
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/001—Dry processes
- C22B7/002—Dry processes by treating with halogens, sulfur or compounds thereof; by carburising, by treating with hydrogen (hydriding)
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Ceramic Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
A method for resource utilization of hazardous waste incineration residues by melting, chloridizing and roasting comprises the following steps: mixing and grinding residues and fly ash after hazardous waste incineration, carrying out magnetic separation to separate metal simple substance particles, carrying out solid-liquid separation, uniformly mixing solids with a chlorinating agent, a reducing agent and a fluxing agent, carrying out pressure molding, heating the section to 800-1300 ℃ for chlorination roasting volatilization, stabilizing the temperature at 1300-1500 ℃ for melting chlorination volatilization for 30-120min, heating the volatilized flue gas to 1100-1200 ℃, decomposing dioxin in the flue gas, rapidly cooling to below 200 ℃, collecting smoke dust through a dust remover, spraying and washing the dedusted flue gas with alkali liquor, precipitating and filtering the spraying liquid, precipitating and filtering the smoke dust and filter cakes containing valuable metal chloride, and carrying out water quenching or air quenching treatment on the molten tailings to obtain glass-like particles for recycling. The invention overcomes the defect that the existing hazardous waste incineration residue is subjected to landfill disposal, and reduces the waste of land resources and the risk of secondary environmental pollution.
Description
Technical Field
The invention relates to harmless treatment and resource utilization of hazardous wastes, in particular to a method for resource utilization of hazardous waste incineration residues by melting, chloridizing and roasting.
Background
The dangerous waste incineration residue and the fly ash are listed in national dangerous waste records, code HW18, the generation of a large amount of dangerous waste incineration residue and fly ash and environmental hazard problems caused by heavy metals, dioxin and the like are gradually emphasized, the current dangerous waste incineration residue and main disposal modes are put into dangerous landfill sites for safe landfill, the dangerous waste incineration residue and the fly ash contain certain heavy metals such as mercury according to the physicochemical property of the dangerous waste, the dangerous waste incineration residue and the fly ash are inevitably subjected to dangerous landfill treatment by a dangerous waste identification standard (GB 633-3585), and the dangerous waste is forbidden to be subjected to high-grade lead/27 mg/3683 treatment after being subjected to high-grade lead/27 mg pre-landfill treatment, wherein the dangerous waste is subjected to high-grade lead/27.3-3585 pre-landfill treatment, and is subjected to high-grade lead/L/362 pre-landfill treatment, and is forbidden to high-grade lead/362 pre-landfill treatment, wherein the dangerous waste is subjected to high-grade lead pre-landfill treatment by a hazardous waste treatment method, namely pre-hazardous waste safety pre-632.
The hazardous waste incineration residue and the fly ash have complex components and contain gold, silver, platinum, palladium, rhodium and the like besides heavy nonferrous metalsRare noble metal, CaO and Al2O3，SiO2The building materials contain different components and valuable metals, so the building materials are 'urban mineral products' with high recycling value, and once the building materials are buried, the building materials cannot be extracted and recycled, and the building materials are also a great resource waste.
The treatment of hazardous waste incineration residues and fly ash usually adopts a landfill treatment mode, the landfill treatment occupies a large amount of national land resources, the waste of land resources is caused, and harmful substances such as heavy metals in hazardous waste have potential secondary environmental pollution risks to soil, underground water and atmosphere. In addition, the landfill disposal also has potential safety hazards, and the safety hazards such as leakage, dam break and the like can happen to the landfill site under the influence of unsafe factors such as climate, geography, human beings and other natural disasters, so that the life and property safety of people is seriously harmed. Meanwhile, the landfill disposal can not achieve the purposes of reducing and recycling hazardous wastes.
CN110937904A discloses a method for producing a novel building material by using fly ash generated by domestic garbage, which is to granulate the fly ash for vitrification reaction to prepare the building material. The method only solidifies the heavy metals in the fly ash, does not separate different components in the fly ash, has a common resource recovery effect, still has great hidden danger after the building materials become waste, and does not realize harmless treatment.
CN105562423B discloses a method for melting fly ash from waste incineration, which comprises the steps of mixing the pretreated fly ash with municipal sludge, phosphogypsum and cement, solidifying, and then carrying out heating melting treatment by using a plasma melting furnace. The method has complex process, only pays attention to the heavy metal in the solidified fly ash, does not achieve the purposes of harmlessness and resource utilization, and uses more auxiliary equipment.
At present, hazardous waste incineration residues are mainly treated in hazardous waste landfill sites. Hazardous waste incineration fly ash is generally solidified by adding a chelating agent to prevent harmful substances such as heavy metal, dioxin and the like in the fly ash from being leached out. However, the solidification of the chelating agent can only ensure that the leaching of harmful components in the fly ash is not overproof within a certain period of time, and the harmfulness to the environment such as underground water, soil and the like still exists in long term. In addition, the fly ash needs to be pretreated by water washing before solidification, and the generated liquid needs to be secondarily treated to reach the discharge standard, so that the wide application of the treatment mode is limited. Heavy metals in the fly ash are extracted mainly by a wet leaching process. Comprises an acid leaching method and an alkali leaching method to extract heavy metals in the incineration fly ash. Because the heavy metal components in the fly ash are complex and have different contents. The metals are difficult to separate, and the leachate needs further harmless treatment. Therefore, the methods have the defects of low extraction efficiency and high recovery cost, and the leached tailings still belong to dangerous waste. Improper control of the disposal operation link can also cause environmental impact. Fly ash plasma fusion treatment, and plasma fusion treatment technology is considered as the most effective and thorough way for treating incineration fly ash. The plasma melting treatment technology has the advantages of high volume reduction rate, thorough harmlessness and wide material adaptability, and can treat almost all dangerous waste types. However, domestic plasma melting treatment equipment is slowly popularized due to the reasons of large equipment investment, high operation cost, technical aspects and the like. In addition, the fly ash plasma melting treatment process only pays attention to the solidification of heavy metal by the fly ash molten slag, and has no advantage in the aspect of extracting the heavy metal in the fly ash for resource utilization.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a method for resource utilization of hazardous waste incineration residues by melting, chloridizing and roasting.
The method provided by the invention can be used for obtaining high-content metal chloride by melting, chloridizing, roasting and volatilizing the hazardous waste, so that targeted harmless treatment and resource utilization can be performed on the hazardous waste. The reason for the implementation of the invention is that the metal chloride generally has the characteristics of low melting point and boiling point, high volatility, water solubility and the like. Under the condition of a certain temperature and atmosphere, the material reacts with the target metal in the material by using a chlorinating agent to generate metal chloride with a lower boiling point, and the metal chloride is volatilized and separated from the material. It is suitable for all solid wastes containing gold, silver, copper, lead, zinc, nickel and tin.
The invention adopts the following specific scheme: a method for resource utilization of hazardous waste incineration residues by melting, chloridizing and roasting comprises the following steps:
1) mixing the residues and fly ash after the incineration of the hazardous waste, refining the mixture to powder of 100 meshes and 150 meshes, carrying out magnetic separation on the powder to obtain metal simple substance particles, carrying out filter pressing on a solid-liquid mixture after the magnetic separation, carrying out solid-liquid separation, uniformly mixing the solid with a chlorinating agent, a reducing agent and a fluxing agent, carrying out pressure molding, and drying for later use;
2) performing chlorination roasting volatilization on the section obtained in the step 1) within the range of 800-1300 ℃, and finally stabilizing the temperature at 1300-1500 ℃ to perform melting chlorination volatilization, wherein the time for the chlorination melting volatilization is 30-120min, and collecting volatilized smoke;
3) heating the flue gas obtained in the step 2) to 1100-1200 ℃, keeping the flue gas for more than 2 seconds, decomposing dioxin in the flue gas, quickly cooling to below 200 ℃, preventing the dioxin in the flue gas from being synthesized again, collecting smoke dust through a dust remover, spraying and washing the dedusted flue gas with alkali liquor, precipitating and filtering the spraying liquid, wherein the smoke dust and a filter cake contain valuable metal chloride;
4) and (3) carrying out water quenching or air quenching treatment on the molten tailings in the step 2) to obtain glassy particles.
Wherein in the step 1), the mass ratio of the residue to the fly ash is (3-5) to 1; the dosage of the chlorinating agent is 6-20% of the total mass of the residue and the fly ash, and the chlorinating agent is selected from one or the combination of calcium chloride, sodium chloride or ferric chloride; the dosage of the reducing agent is 2-10% of the total mass of the residue and the fly ash, and the reducing agent is selected from one or a combination of more of blue carbon powder, coke powder or coal powder; the dosage of the fluxing agent is 10-30% of the total mass of the residue and the fly ash, and the fluxing agent is selected from one or a combination of lime powder, limestone or quartz stone; molding the mixture into a cylinder with the outer diameter of 50mm, the inner diameter of 15mm and the height of 50mm by pressure; the drying temperature is 100-200 ℃.
In the step 3), the alkali liquor is one of a sodium hydroxide aqueous solution, a calcium oxide aqueous solution or a sodium carbonate aqueous solution.
And 3) firstly heating the flue gas to 1100-1200 ℃ in a secondary combustion chamber, enabling the residence time of the flue gas to be more than 2 seconds, decomposing and removing more than 99% of dioxin harmful substances in the flue gas at high temperature, and rapidly cooling the flue gas to be below 200 ℃ within one second through a quench tower, so that the dioxin can be effectively controlled to be synthesized again.
And 4) the trace heavy metals remained in the hazardous waste incineration residues and the fly ash in the high-temperature chlorination roasting volatilization treatment process are solidified in a glass body formed by water quenching or air quenching of the molten tailings, so that secondary pollution to the ecological environment caused by heavy metal leaching can be effectively prevented. The invention can efficiently and comprehensively recycle valuable metals in the hazardous waste incineration residue and the fly ash, the molten tailings in the disposal process are processed into vitreous slag through water quenching or air quenching, and the vitreous slag can be used for recycling cement production raw materials, building materials, road base materials and the like, so that the hazardous waste is changed into valuable.
The invention solves the defect that the hazardous waste incineration residue and the fly ash are treated by landfill at present, reduces the secondary environmental pollution risk caused by landfill of the hazardous waste incineration residue and the fly ash, greatly saves the valuable land resources of China, and simultaneously can generate certain economic benefit and social benefit, thereby realizing the aim of reducing, harmlessly treating and recycling the hazardous waste advocated by the nation.
Detailed Description
The present invention is described below with reference to examples, which are provided for illustration only and are not intended to limit the scope of the present invention.
Specific formulations of examples 1-4 are shown in Table 1.
TABLE 1 materials information of examples 1-4
Example 1
A method for resource utilization of hazardous waste incineration residues by melting, chloridizing and roasting comprises the following steps:
1) mixing the residues and fly ash after the incineration of the hazardous waste, refining the mixture to 150 meshes of powder, carrying out magnetic separation on the powder to separate metal simple substance particles, carrying out solid-liquid separation on a solid-liquid mixture after the magnetic separation, uniformly mixing the solid with a chlorinating agent, a reducing agent and a fluxing agent, carrying out pressure molding, and drying for later use;
2) putting the section obtained in the step 1) into a corundum crucible, preheating to 800 ℃ in a high-temperature melting furnace, then heating to 1300 ℃ for chlorination roasting volatilization, and finally stabilizing the temperature at 1500 ℃ for chlorination melting volatilization for 30 min;
3) and (3) performing water quenching treatment on the tailings melted in the step 2) to obtain glassy particles.
Example 2
A method for resource utilization of hazardous waste incinerated substances through melting, chloridizing and roasting comprises the following steps:
1) mixing the residues and fly ash after the incineration of the hazardous waste, refining the mixture to powder of 100 meshes, carrying out magnetic separation on the powder to separate metal simple substance particles, carrying out solid-liquid separation on a solid-liquid mixture after the magnetic separation, uniformly mixing the solid with a chlorinating agent, a reducing agent and a fluxing agent, carrying out pressure molding, and drying for later use;
2) preheating the section bar obtained in the step 1) to 200 ℃, then heating to 800 ℃ for chlorination roasting volatilization, and finally stabilizing the temperature at 1300 ℃ for melting chlorination volatilization, wherein the melting chlorination volatilization time is 120 min;
3) and (3) performing air quenching treatment on the tailings melted in the step 2) to obtain glassy particles.
Example 3
A method for resource utilization of hazardous waste incinerated substances through melting, chloridizing and roasting comprises the following steps:
1) mixing the residues and fly ash after the incineration of the hazardous waste, refining the mixture to powder of 100 meshes, carrying out magnetic separation on the powder to separate metal simple substance particles, carrying out solid-liquid separation on a solid-liquid mixture after the magnetic separation, uniformly mixing the solid with a chlorinating agent, a reducing agent and a fluxing agent, carrying out pressure molding, and drying for later use;
2) preheating the section bar obtained in the step 1) to 600 ℃, then heating to 1100 ℃ for chlorination roasting volatilization, and finally stabilizing the temperature at 1400 ℃ for melting chlorination volatilization, wherein the melting chlorination volatilization time is 60 min;
3) and (3) performing water quenching treatment on the tailings melted in the step 2) to obtain glassy particles.
Example 4
A method for resource utilization of hazardous waste incinerated substances through melting, chloridizing and roasting comprises the following steps:
1) mixing the residues and fly ash after the incineration of the hazardous waste, refining the mixture to 150 meshes of powder, carrying out magnetic separation on the powder to separate metal simple substance particles, carrying out solid-liquid separation on a solid-liquid mixture after the magnetic separation, uniformly mixing the solid with a chlorinating agent, a reducing agent and a fluxing agent, carrying out pressure molding, and drying for later use;
2) preheating the section bar obtained in the step 1) to 400 ℃, then heating to 900 ℃ for chlorination roasting volatilization, and finally stabilizing the temperature at 1350 ℃ for chlorination melting volatilization, wherein the chlorination melting volatilization time is 80 min;
3) and (3) performing air quenching treatment on the tailings melted in the step 2) to obtain glassy particles.
The metal content of the glassy particles obtained after the treatment of examples 1 to 4 was analyzed, and the results are shown in tables 2 and 3.
TABLE 2 Metal content of residue and fly ash after mixing
| Name (R) | Gold (g/t) | Silver (g/t) | Copper (%) | Lead (%) | Zinc (%) |
| Content (wt.) | 3.39 | 59.85 | 0.33 | 0.59 | 1.95 |
TABLE 3 EXAMPLES 1-4 metal volatility
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A method for resource utilization of hazardous waste incineration residues by melting, chloridizing and roasting is characterized by comprising the following steps:
1) mixing the residues and fly ash after the incineration of the hazardous waste, refining the mixture to powder of 100-150 meshes, carrying out magnetic separation on the powder to separate metal simple substance particles, carrying out filter pressing on a solid-liquid mixture after the magnetic separation, carrying out solid-liquid separation, uniformly mixing the solid with a chlorinating agent, a reducing agent and a fluxing agent, carrying out pressure molding, and drying for later use;
2) preheating the section obtained in the step 1) in a melting chlorination volatilizing furnace, raising the temperature to 800-1300 ℃ for chlorination roasting volatilization, stabilizing the temperature at 1300-1500 ℃ for melting chlorination volatilization, wherein the time for melting chlorination roasting volatilization is 30-120min, and collecting volatilized smoke;
3) heating the flue gas obtained in the step 2) to 1100-1200 ℃, decomposing dioxin in the flue gas, quickly cooling to below 200 ℃, preventing the dioxin in the flue gas from being synthesized again, collecting smoke dust through a dust remover, spraying and washing the flue gas subjected to dust removal with alkali liquor, precipitating and filtering the spraying liquid, wherein the smoke dust and a filter cake contain valuable metal chloride;
4) and (3) carrying out water quenching or air quenching treatment on the tailings melted in the step 2) to obtain glassy particles for resource utilization.
2. The method according to claim 1, wherein in the step 1), the mass ratio of the residue to the fly ash is (3-5): 1.
3. The process according to claim 1, wherein in step 1), the chlorinating agent is used in an amount of 6-20% of the total mass of the residue and the fly ash, and is selected from one or more of calcium chloride, sodium chloride and ferric chloride.
4. The method as claimed in claim 1, wherein in step 1), the amount of the reducing agent is 2-10% of the total mass of the residue and the fly ash, and is selected from one or more of blue carbon powder, coke powder or coal powder.
5. The method as claimed in claim 1, wherein in step 1), the amount of the fluxing agent is 10-30% of the total mass of the residue and the fly ash, and is selected from one or more of lime powder, limestone or quartz stone.
6. The method according to claim 1, wherein in step 1), the pressure molding is carried out to form a cylinder with an outer diameter of 50mm, an inner diameter of 15mm and a height of 50 mm; the drying temperature is 100-200 ℃.
7. The method of claim 1, wherein in step 3), the alkali solution is one of an aqueous sodium hydroxide solution, an aqueous calcium oxide solution or an aqueous sodium carbonate solution.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112374751A (en) * | 2020-11-11 | 2021-02-19 | 浙江得铭智能环保科技有限公司 | Treatment method for green recycling of fly ash |
| CN112694283A (en) * | 2021-01-20 | 2021-04-23 | 清远金谷智联环保产业研究院有限公司 | Artificial stone and method for preparing artificial stone by utilizing solid hazardous wastes |
| CN112696699A (en) * | 2020-12-28 | 2021-04-23 | 浙江省环保集团有限公司 | System and method for co-processing hazardous waste incineration residue and fly ash |
| CN112851125A (en) * | 2021-02-26 | 2021-05-28 | 中国五环工程有限公司 | Hazardous waste molten glass treatment method |
| CN113058981A (en) * | 2021-04-08 | 2021-07-02 | 中节能工程技术研究院有限公司 | Disposal method for bottom slag and dust generated by burning hazardous waste |
| CN113245339A (en) * | 2021-04-29 | 2021-08-13 | 江西双能环保科技有限公司 | Treatment method for recycling comprehensive utilization of incineration fly ash |
| CN114345888A (en) * | 2021-12-06 | 2022-04-15 | 华南理工大学 | Method for promoting heavy metal chlorination volatilization by blending medical waste incineration fly ash and slag |
| CN114804589A (en) * | 2022-04-29 | 2022-07-29 | 重庆大学 | Preparation method and application of household garbage incineration fly ash molten glass |
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